Inductive arrangement for signaling over power lines



March, so 1926. 1,578,552

' c. scHwARz INDUGTIVE ARRANGEMENT FOR SIGNALING OVERPOWERLINES Filed Oct. 51, 1921 Patented Mar. 30, 1926.

UNITED STATES "PATENT, caries.

CARL SCHWABZ, OF CHARLOTTENBUBG, NEAR BERLIN, GERMANY, ASSIGNOR TO WESTINGHOUSE ELECTRIC & MANUFACTURING COMPANY, A CORPORATION OF.

rnnnsnvanm.

VINDUCTIVE ARRANGEMENT ron sr'ensnmo ovnn POWEB'LINES.

Application filed October 31, 1921. Serial No. 511,633.

To all whom it may camera: 1

Be it known that I,CARL SCHWARZ, a citizen of Germany, residing in Charlottenburg, near Berlin, Germany, have invented a 5 new and useful Improvement inan Inductive Arrangement for Signaling Over Power Lines, of which the following is the speci;

fi'cation.

This invention relates to arrangements for imposing currents of radio-frequency upon to provide an inexpensive and "convenient means for supporting the supplementary conductor and for supporting a portionjofa one line conductor in proximity thereto. I

It is a further object of this invention to accomplish the object just stated with a minimum number of masts.

It is a further object of this invention to.

provide one wire of the transmission line with a loop located atone side of the lme and to support a loop of the auxiliary conductor adjacent to the loop in said wire.

These and other ob'ects 'of my invention, as well as the details of construction by which my invention is to be practiced, will be more fully disclosed by the following description and the accompanying drawing, wherein Y single fig' re is ,a view, Partly diagram' matic and partly in perspective, of the ar- 0 rangement of wires and supports used 1n my invention. 1

The transmission line is is made up of a number of wires, ordinarily as many as the phases, which are supported from the masts 5 or other similar supports by the usual arrangeinent of cross wires and strain insulators or by'the usual cross arms. At any convenient point in the line where it 'is desired to impress upon it radio-frequency current or to receive radio-frequency current from the line, a mast m is located at one side of the line and two masts h. a distance apart, upon the other side of the line. From the mast m a pair of stay Wires, each provided with the necessary strain insulators, go to two points upon one of the wires of the transmission line. .The points at which these stay wires support the wire 1 are separated'by a distance dependent upon the distance wh1ch the loop, described below,

is located ,to one side of the transmission line. a v

The two masts k are each supplied with a stay Wire and these wires have strain insulators. The stay wires are connected to the line wire Z at the points a andv 650 that the wire Z is held in the form of a triangular loop atone side of-the transmission line. Where this 'wire appears in the drawing to cross, forming the point of the triangle nearest the line, one portion of the wire is supported at a somewhat greater height than the other so that the loop' in the wire I is not in danger of being short circuited' by any motion of the wires due to wind. or other disturbing causes.

The mast m carries a third stay wire which is also provided with insulators andsupports the nearest oint of a second loop s. The masts h are a so provided with aux iliary stay wires and support the other two corners of the'loop 8;: From any convenient point on this loop 8 lead wires go to the signal sendingor signal receiving apparatus. Since this loop constitutes the means bywhich energy leaves the: signaling 'ap-' paratus to be sentalong the line or the means by which signaling energy leaves the lineto be received in-the signaling-receiving apparatus, the loop .9 may be properlyv called an antenna.

It is obvious that either one of the wires in the transmission line is may be chosen instead of the wire Z so that any phase of the transmitted power may be used to supply the loo Itis also obvious that, if

desired, di erent wires in the transmission line may be formed into such loops at different oints along the line and, also, that other lines beside power-transmission lines may be supplied with such loops if desired 4 v v I elaixn as my invention: 1. In a power-transm1ssion line comprismg a number of line wires, means for supporting onev'of said line wires at separated points, supporting means at one side of the transmission line, a loop in said Wire, extendingbetween said separated points and supported in part by said supporting means at one side of the line, and a loop distinct from said line wire inductively related to the first-named loop.

2. In a power-transmission line comprismg a number of line wires, means for supporting one of said line Wires at separated, points, supporting means at one side oi the transmission line, a loop in said Wire, ex-

-tend'ing' betweensaid separated points and supported in part by said snporting means at one side of the line, a ooped antenna and auxiliary supporting means for maintaining said looped antenna in proximity to said line Wire loop 3. In atransmission-line system, a mast at one side of the line and a plurality of masts at the other side of the line, means extending from' the first named mast for supporting one wire of the transmission line at two separated points, a polygonal loop in said line wire and means extending said polygonallloop, said loop having as many corners as there are masts.

4. In a transmission-line system, a mast fromeach of the other masts for supporting so at one side of the'line and a plurality of I corners as there are masts, auxiliary supporting means extending from each of said masts and a polygonal antenna loop suprted by said auxiliary supporting means in inductive relation to said first named loop.

In testimony whereof I aiiix my signature.

pint sonwsnzf 

